An online detecting method for metal wire surface detects and a detecting device

A metal wire and detection method technology, applied in the direction of material magnetic variables, etc., can solve the problems of low inspection efficiency, waste of batches, poor reliability, etc., and achieve the effect of improving efficiency and accuracy

Inactive Publication Date: 2016-05-04
NO 52 INST OF CHINA NORTH IND GRP CORP
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  • Abstract
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  • Application Information

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Problems solved by technology

In the traditional metal wire processing process, quality control and judgment are mainly based on sampling inspection after the key process, manual measurement or finished product welding performance evaluation. This method has low inspection efficiency and poor reliability. It is greatly affected by t...

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  • An online detecting method for metal wire surface detects and a detecting device
  • An online detecting method for metal wire surface detects and a detecting device
  • An online detecting method for metal wire surface detects and a detecting device

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Embodiment

[0036] Take the online monitoring process of aluminum alloy wire ER5356 with a diameter of φ2.17 as an example. After the system starts running, the pay-off machine can pay off the wire at a constant speed between V=4m / s; then enter the water tank and use a φ2.028 ordinary polycrystalline mold drawing die to stretch and deform the wire, from a diameter of φ2. 17 is drawn to φ2.0; the drawn wire enters the ultrasonic cleaning device to remove surface oil stains, the ultrasonic vibration plate is 3kw, the water temperature is controlled at 58°C, and the clean water is freshly replaced in the morning; the cleaned wire enters the air drying system to remove moisture , the wind pressure is kept at 32Kpa, and the temperature inside the air gun is at 73°C; after air drying, the clean and dry wire enters the eddy current probe, and the eddy current probe detects the wire at a frequency of 32Khz; then enters the laser system to measure the wire diameter, and the wire diameter is display...

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Abstract

An online detecting method for metal wire surface detects is provided. Surface defects are critical factors influencing quality in cold drawing processes of metal wires. The wire surface defects can be detected in real time in production and processing processes through the method. The method is based on an eddy current testing technique, utilizes an electromagnetic induction principle that eddy current is generated in a conductor through an exciting coil, and measures an eddy current change by means of an exploring coil, thus acquiring metal surface defect related information, and implementing the method. A detecting process is free of contact with an object to be detected and free of a coupling medium. The method is high in detection speed and precision and can meet online detection requirements.

Description

technical field [0001] The invention relates to a method for detecting defects on the surface of metal wires, in particular to inventing an online detection method for metal wires based on eddy current technology. Background technique [0002] Eddy current detection is based on the theory of electromagnetic induction. Specifically, the alternating current excitation coil is close to the conductor. Due to the excitation of the alternating current coil, an induced current, that is, an eddy current, is generated on the surface of the conductor, and another magnetic field is also generated at the same time. The direction of the magnetic field is opposite to the direction of the original magnetic field. [0003] The metal wire surface defect detection method is to use the magnetic field in the opposite direction to act on the original magnetic field, so that the resistance and inductance of the detection coil, that is, the impedance, changes, and the magnitude and phase of the cu...

Claims

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Application Information

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IPC IPC(8): G01N27/90
CPCG01N27/90
Inventor 高世鹰倪培君王东李庭刘春兰乔波张登峰邬福宝薛建芳周喜顺郑宏伟吕文利雷燕赵春蕾张文波牛少慧王强胡立慧
Owner NO 52 INST OF CHINA NORTH IND GRP CORP
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